Method and machine for forming a hollow rivet
US4136417A · kind A · utility
6Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1977 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | May 2, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21K1/60
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The method and machine for forming a hollow rivet having a head at one end and an axially recessed shank at the other end, by means of placing a blank in a fixed die and performing the extruding operation on one end of the blank followed by a heading operation on the other end of the blank by a single blow of the heading hammer and then ejecting the hollow headed rivet from the fixed die.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.